Gearing.



No. 694,724. Patented Mar. 4, |902.

A. T. BROWN.

GERNG.

(Application led Oct. 23, 1901.) (llo Hedel.) 2 Sheets-Sheet l.

WTN ESSES: {NVENTOR l I mm ATTORNEYS THE ohms vrrsas cn.. PHOTULINQ., wAsmnaToN, n. L

No.. 694;?24. Patented Mar. 4,1902.

A r. Bown. K

l SHARING.

(Application med ont. 23| 1901.)

(Nn Model.) ZSheais--Sheet 2.

wlmsssufs:l INVENTOR 'l ATTORNEYS Y TH: noms ferns wwwrun-wm wasmncmn. q, c*-

UNITED SIATESA 4lfjNrisNT OFFICE.`

ALEXANDER T. BROWN, OF ASYRACUSE, NEW YORK.

elimine.l` l

SPECIFICATION formingpart of Letters Patent No. 694,724, dated March 4, 1902.

- Application filed October 23, 1901. Serial No. 79,622. (No model.)

To all whom, it Hefty concern.-

Be it known that I, ALEXANDERT. BROWN, of Syracuse, in the county of Onondaga and State of New York, have invented a vcertain new and useful Gearing, of which thefollowing is a specilcation. p

This invention hasl for its object the production of agear, popularly/:termed a differential7 or compensating gear, which is particularlyv simple in construction, economical in manufacture, and eflicient and durable in use; and to this end it consists in the de-y vices and combinations hereinafter set forth and claimed.

Figures 1 and 2 are respectively top,plan ,and side elevation of my differential gear, all of the parts except the brake members and their supporting and actuating means being shown by dotted lines. Fig. 3 is a side elevation of the portion of my differential gear illustrated by dotted lines in the preceding figures. Fig. et is a vertical sectional View taken on line 4. 4, Fig. 3. f Fig. 5 is a Vertical sectional view, partly broken away, taken on line 5 5, Fig. t. Fig. 6 is an elevation, partly broken away,

of one of the detached power-transmitting` members. l

My diierential gear comprises, essentially,

two alined shafts A B, power-transmitting members C D E, gears F, brake members G G', and means for supporting and actuating the brake members. The shafts A B are. of any desirable form, size, and construction, being here shown as arranged endl to end; It is obvious, however, that one of said shafts may consist of a sleeve encircling a part of the other shaft. The power-'transmitting members C D are fixed, respectively, to the shafts A B by any suitable means, (not illustrated,) and their opposing sides are provided with inwardly-projecting hubs c d and with inwardly-projecting iianges c d', which are formed with peripheral engaging. faces c2 de, peripheral projecting Yshoulders c3 d3 at the inner sides of said faces c2 d2, and toothed internal faces ct di. Said power-transmitting ,i member E isarranged concentric with the shafts A B, is movable independently thereof, and is formed witha hub e, which is loosely mounted on the hubs c d, closely fits between contiguous surfaces of the opposing sides of the power-transmitting members G D, and is ber E isinterposed between contiguous sur-- faces of the inwardly-projecting flanges c d and the shoulders c3 d3 and is preferably en l gaged with said surfaces for forming a substantially tight. joint therewith. Said portion of the power-transmittingmember E is usually formed with peripheral teeth e2 and with shoulders e3, lapped upon the peripheral faces of the shoulders c3 d3. The flan ges c d and the interposed portion of the powertransmitting member E thus form the peripheral vwall of a casing, which incloses the gears F, presently described, and is provided with an inner wall arranged concentric with said peripheral. wall and composed of the hubs c d and 'with opposite side walls composed of the main portions of the powertransmitting members C D. kThe powertransmitting member E is also provided with a plurality ofsubstantially equidistant openings e4, which extend through its side faces between the hub e and the flanges c d', and with a plurality of arms e5, which project from 'said side faces between the openings e4, and are suitably fixed to plates e6, arranged between opposing surfacesof the power-transmitting members C D and engaged with the faces e' and with the'end faces of the arms e5.

v The gears Fare arranged in substantially equidistant pairs, one pair within each of the' openings e, between opposing surfaces of the powertrans'mitting members C D, with their axes disposed substantially parallel with the shafts A B, are generally supported on spini dies f, here shown as tubular and as having their ends arranged in openings e7 in the plates e6 and as eXpanded'in-the outer ends of said openings to secure the spindles in position, and the ends of each of said gears are usually extended beyond the side faces of the power-transmitting member E. Portions of the gears of each pair of saidgears are engaged with each other, and additional portions thereof are respectively engaged with the internal Jtoothed faces of the flanges c' d. Said brake members G G' preferably consist of transversely-split bands, respectively encircling the engaging faces o2 d2, and each having its opposite ends separated. The means for supporting the brake members G G' is here shown as a rod or link I-I having a forked rear end, and levers h, which are arranged at substantially right angles with the rod or link Il, are pivoted or otherwise secured to the separated ends of the brake members G G', and are pivoted between the separated ends of the brake members at h to the branches of the forked end of the rod or link II. The means for actuating the brake members usually consists of a draw-bar or other actuating member I, arranged above the rod or link I-I, and a cross-bar or evener t, having its opposite ends arranged in sockets in the opposing sides of the levers h and its intermediate portion pivoted to the draw-bar or actuating member I and provided with shoulders z" for limiting the pivotal movement of said draw-bar or actuating member I relatively to the cross-bar or evener.

In the use of my invention the power-transmitting member E drives both'shafts in the same direction, and either shaft is free torotate independently of the other, and when it is desired to' retard or prevent the operation of said shafts the draw-bar or actuating member I is drawn forwardly, clamping the brake members G G upon the power-transmitting members C D, fixed to the shafts A B. As said brake members engage parts fixed to the shafts A B, the rotation of said shafts can be retarded or prevented even though the interternal mechanism, as the gears F of my invention, becomes broken or inoperative, and in case one of the brake members should be inoperative the other maybe relied upon.

` The construction and operation of my differential or compensating gear will be readily understood upon reference to the foregoing description and the accompanying drawings, and'it will be obvious to those skilled in the art that more or less change may be made in the construction and arrangement of its parts without departing from the spirit of my invention.

Having thus fully described my invention, what I claim'as new, and desire to secure by Letters Patent, is

' l. The combination of two shafts,two powertransmitting members fixed respectively to the shafts and having opposing sides provided with toothed internal faces, a third powertransmitting member arranged between opposing surfaces of the first 'two power-transmitting members concentric vwith the shafts and movable independently thereof,said third tween opposing surfaces of the first two poweri transmitting members, and a pair of gears arranged in the opening of the third powertransmitting member and each having its ends extended beyond the side faces of the internal faces, substantially as and for the purpose specified. 1

3. The combination of two shafts,two powertransmitting members fixed respectively to the shafts and having opposing sides provided with toothed internal faces, a third powertransmitting member arranged between opposing surfaces of the Vfirst two power-transmitting members concentric with the shafts and movable independently thereof,said third IOO power-transmitting member being formed with 'an opening extending through its side faces and arms projecting from said side faces between opposing surfaces of the-first two power-transmitting memberspplates fixed to the arms between opposings'urfaces of the first two power-transmitting members, and a pair of gears arranged in the opening'of the third power-transmitting memberv and each having its ends extended beyond the side IIO faces of the third power-transmitting member and supported by the plates, said gears having their axes disposed substantially parallel with the shafts and being engaged with each other and respectively engaged with said toothed `internal faces, substantially as'and for the purpose/ set forth.

4. The combination of two shafts,two powertransmitting members fixed respectively to the shafts and having opposing sides provided with toothed internal faces, a third power'- i transmitting member arranged between opposing surfaces of the first two power-transmitting members concentric with the shafts and movable independently thereof,said third power-'transmitting member 'being formed f faces of the first two power-transmitting memfor the purpose described.

5. The combination of two shafts,two power-V transmitting members fixed respectively to the shafts and having opposing sides provided with toothed internal faces and inwardly-proj ectinghubs,'a third power-transmitting member arranged between opposing surfaces of the first two power-transmitting members concentric with the shafts and loosely mounted on the inwardly-projecting hubs, said third powertransmitting member being formed with an opening extending through its side faces, and a pair of gears supported in' the opening by the third power-transmittin g member between opposing surfaces of the rst two power-transmittin g members and projecting beyond the side faces of the third power-transmitting member, said gearshaving their axes disposed substantially parallel with the shafts and being engaged with each other and respectively engagedwith said toothed internal faces, substantially as and for the purpose specified.

6. The combination of two shafts,two powertransmitting members fixed respectively to the shafts and having opposing sides provided with toothed internal faces and inwardly-projectinghubs,a third power-transmittin g member arranged betweenopposing surfaces of the first two power-transmitting members concentric with the shafts and loosely mounted on the inwardly-projecting hubs, said third powertransmitting member being formed with an opening extending through its side faces, plates xed to opposite, sides of the third power-transmitting member between opposing surfaces of the first two kpower-transmitting members, land ay pair of gears arranged in the opening of the third powertransmitting member and each having its ends extended beyond the side faces of the third power-transmitting; member and supported by the plates, said gears having their axes disposed `substantially parallel with the shafts and being engaged with each other and respectively engaged with said toothed internal faces, substantially as and for the purpose set forth. j

7. The combination of two shafts,two powertransmitting members fixed respectively to the shafts, a third power-transmitting member arranged concentric with the shafts and movable independently thereof, said third power-transmitting member having a portion thereof interposed between contiguous portions ofthe first two power-transmitting memvbers and coperatingtherewith to form an inclosing wall, and gears supported between the shafts and said inclosing wall and connectin g the power-transmittin g members,sub stantially as andfor the purpose described.

8. The combination of two shafts,two powertransmitting members fixed respectively to the shafts and having their opposing sides provided with inwardly-projecting lianges, a

third power-transmitting member arranged concentric with the shafts and movable independently thereof, said third powertransmitting member having ayportion thereof interposed between contiguous surfaces of the inwardly-projecting flanges and forming a substantially tight joint therewith, and gears supported between the shaftsand said anges and connecting the power-transmitting members, substantially as and for the purpose specified.

9. The combination of two shafts,two powertransmitting members fixed respectively to theshafts and having their opposing sides provided with inwardly-projecting flanges, a third power-transmitting member arranged concentric with the shafts and movable independently thereof, said third power-transmitting member having a portion thereof interposedbetween contiguous surfaces of the inwardly-projecting flanges and forming a 'substantially tight joint therewith, and be'- ing formed with shoulders lapped upon contiguous peripheral surfaces of the iianges, and gears supported between the shafts and said iianges and connecting the power-transmitting members, substantially as and for the purpose set forth. p f

lO. The combination of two shafts, two power-transmitting members fixed respectively to the shafts and having their opposing sides provided with inwardly-projecting flanges formed with peripheral projecting shoulders, a third power-transmitting member arranged concentric with the shafts vand IOS IIO

movable independently thereof, said third v power-transmitting member having a portion thereof interposed between contiguous surfaces of the inwardly-projecting anges and the peripheral shoulders thereof and being formed with shoulders lapped upon the peripheral shoulders of the flanges, and gears supported between the shafts and said Iianges and connecting the powertransmittin g members, substantially as and for' the purpose described.Y

1l. The combination of `two shafts, two power transmitting members fixed respectively to the shafts and having their opposing sides provided with inwardly-projecting hubs and flanges, athird power-transmitting member arranged concentric with the shafts and `loosely mounted on the inwardly-projecting hubs, said third power-transmitting member having a portion thereof interposed between contiguous surfaces of the inwardly-projecting flanges and being formed with shoulders lapped upon contiguous peripheral surfaces theshafts and said flanges and connecting .the power-,transmitting members, substantiallyas and for the purpose specified.

12. The combination ot' twoshafts, a powertransmitting member having a hub andrecesses in opposite faces formed concentric with the hub, additional power-transmitting members having opposing sides providedwith hubs projecting-within the hub of the first power-transmittin g member and respectively fixed to the shafts, said additional powertransmitting members having their opposing sides provided with flanges projecting into the recesses of the first power-transmitting member, and gears supported between the shafts and said flanges and connecting the power-transmitting members, substantially as and for the purpose set forth.

13. The combination of two shafts, two power-transmitting members fixed respectively to the shafts and having their opposingsides provided with inwardly-projecting flanges formed with toothed internal faces, a third power-transmitting member arranged concentric with the shafts and movable independently thereof, said third power-transmitting member being formed with an opening therein, and a pair of gears supported in the opening by the third power-transmitting member and having their axes disposed substantially parallel with the shafts, said gears being engaged with each other and respectively engaged with the toothed internalfaces of the flanges, substantially as and forthe purpose described.

14:. The combination of two shafts, two power-transmitting members fixed respectively to the shafts and having their opposing sides provided with inwardly projecting flanges formed with toothed internal faces, a third power-transmitting member arranged concentric with the shafts and movable independently thereof, said third power-transmitting member being formed with an opening therein and having a portion thereof interposed between contiguous surfaces of the inwardly-projecting flanges and forming a substantially tight joint therewith, and a pair of gears supported in the opening by the third power-transmittin g member and having their axes disposed substantially parallel with the shafts, said gears being engaged with each other and respectively engaged with the toothed internal faces of thelianges, substantially as and for the purpose specified.

15. The combination of two shafts, two power-transmittingmembers fixed respectively to the shafts and having their opposing sides provided with inwardly-projecting hubs, and Withinwardly-projecting flanges formed with toothed internal faces, a third powertransmitting member arranged concentric with the shafts and loosely mounted on the inwardly-projecting hubs, said third powertransmitting member being formed with an opening extending through its side faces, and

having a portion thereof interposed betweenk contiguous surfaces of the Vinwardly-projectingflanges, plates fixed to opposite sides of the third power-transmitting member, and aV 17. The combination of two shafts, two l power-transmitting members fixed respec, tively to the shafts and formed with peripheral engaging faces, a third power-transmitting member arranged concentric with the shafts and movable independently thereof, said third power-transmitting member having a portion thereof interposed between the peripheral faces of the first power-transmitting member, gears supported by the third powertransmitting member and connecting said power transmittingl members, and brake members for respectively engaging said peripheral faces of the first two power-transmitting members, substantially as and for the purpose set forth.

18. The combination of two shafts, two power-transmitting members fixed respectively to the shafts and provided with peripheral engaging faces, said members having opposing sides provided with toothed internal faces, a third power-transmitting'member arranged between opposing surfaces of the first two power-transmitting members concentric with the shafts and movable independently thereof, said third power-transmitting member being formed with an opening extending through its side faces, a pair of gears supported in the opening by the third power-transmitting member between opposing surfaces of the first two power-transmitting members and projecting beyond the side faces of the third power-transmitting member, said gears having their axes disposed substantially parallel with the shafts and being engaged with each other and respectively engaged with said toothed internal faces, and brake members for respectively engaging said peripheral faces of the first two power-transmitting members, substantially as and for the purpose described.

19. The combination of two shafts, two power transmitting members fixed respectively to the shafts and having their opposing sides provided with inwardly-p rojecting hubs and with inwardly-projecting flanges formed with peripheral engaging faces and with toothed internal faces, a third power-trans- IOO IIO

mitting member arranged concentric with the shafts and loosely mounted on the inwardlyprojecting hubs, said third. power-transmitting member being formed with an opening extending through its side faces and having Va portion thereof interposed betweencon-4 iiguous surfaces of the inwardly-projecting flanges, plates fixed to opposite sides of the third power-transmitting member, apair of gears arranged inthe opening and sup ported by the plates, said gears having their axes disposed substantially parallel with the shafts and being engaged with each otherand respectively engaged with the toothed internal kfaces'of the iianges, and brake members for y ALEXANDER TyBRoWN] -\Vitnesses:

' D.l LAVINE, l S. DAVIS. 

